Alkali metal reactions - Study guides, Class notes & Summaries

2024 Newest |Chemistry exam 1| UPDATE|COMPREHENSIVE FREQUENTLY MOST TESTED QUESTIONS AND VERIFIED ANSWERS|GET IT 100% ACCURATE ionic compound properties - ANSWER-- have a high melting and boiling point - they're solid at room temperature - are hard, but brittle, so they're not malleable or ductile - don't conduct electricity in solid state - are good conductors of electricity in liquid state or when dissolved in water - they vary from very soluble to insoluble in water, they'r...

CIDESCO Exam Prep Questions and Answers 100% Pass I Biological and non-biological substances both need oxygen for their existence. II The human body consists only of biological substances. - Answer- I is correct and II is incorrect Characteristics of life include: - Answer- growth and metabolism Examples of synthetic substances are: - Answer- plastics and silicones Examples of organic biological substances are: - Answer- carbohydrates and fats Examples of mineral substances are: - Answer...

UNIT 4 Combustion of Methane: CH4(g) + 2 02 -> C02 (g) + 2 H20 (g) a) If we have five molecules of CH4 and eight molecules of 02, which is the limiting reactant? 02 is limiting reactant because it yields the least amount of product UNIT 4 N2 (g) + 3 H2 (g) -> 2 NH3 (g) Find mol of NH3 (reactant and excess) H2 is the limiting reactant because it yields 2 molecules of NH3 while N2 yields 6 molecules of NH3 UNIT 4 How many moles of Si3N4 can be made from 1.20 moles of of Si and...

Which statement about an element's average atomic mass is correct? - c. It is a weighted average, so common isotopes have a greater effect than uncommon ones. Which statement about the atom's nucleus is correct? - b. The nucleus is made of protons and neutrons and has a positive charge What is an atom's nucleus made of? - a. protons and neutrons The charge of an atom is - b. neutral An iron atom has an atomic mass of 56. Its atomic number is 26. How many neutrons does the iron atom hav...

NACE (National Association of Corrosion Engineers) CP1 Tester Exam Corrosion A) is defined by NACE International as the deterioration of a material, usually a metal that results from a reaction with its environment. B) is produced when acids dissociate , when cation takes place C) is the division of chemistry that deals with the transfer of electric charge in chemical reactions D) involves the movement of electrons anode to cathode for the reduction reaction to occur E) is equal to...

MCGRAW HILL CHEMISTRY CHAPTER 4 TEST QUESTIONS WITH CORRECT DETAILED ANSWERS Precipitation Reaction - Answer-Two soluble ionic compounds react to give an insoluble product Soluble - Answer-Compounds containing alkali metal ions (Li+, Na+, K+, Rb+, Cs+) Soluble - Answer-Compounds containing the nitrate ion (NO3-) Soluble - Answer-Compounds containing the ammonium ion (NH4+) Soluble - Answer-Compounds containing bicarbonates (HCO3-) Soluble - Answer-Compounds containing chlorates ...

Ocr a level chemistry paper 1 2023 QUESTIONS AND ANSWERS// OCR A- Level Chemistry Paper 1 2022 LATEST UPDATE Define Transition element - CORRECT ANSW-A d-block element that can form at least one stable ion with an incomplete d subshell Why aren't scandium and Zinc transition elements? - CORRECT ANSW-Cannot form stable ions with an incomplete d-sub shell. Sc 3+ has an empty d-sub shell and Zn 2+ has a full d sub shell. Name the oxidation states and coloured io...

ACS Chemistry Final Exam 182 Questions with Verified Answers Layout of an element (mass # & atomic #) - CORRECT ANSWER atomic number = - CORRECT ANSWER # of protons mass number = - CORRECT ANSWER # of protons + neutrons the number of protons in a neutral atom will equal the - CORRECT ANSWER # of electrons how to find the correct number of neutrons - CORRECT ANSWER mass number - atomic number Forms of the same elements that differ in amount of neutrons - CORRECT ANSWER isotopes...

What are the group 1 metals known as? - correct answer The Alkali Metals Reactivity within the groups: - correct answer Alkali metals: reactivity increases as you go down, melting point/boiling point decreases as you go down Halogens: reactivity decreases as you go down and melting point/boiling point increases as you go down What properties do the group 1 metals have? - correct answer They all ha...

SALTS All solid salts consist of positive and negative ions, and some of them contain water molecules as well. The water in a lattice is called water of crystallisation. One mole of a hydrated salt always has a certain number of moles of water of crystallisation shown in the formula. For example, hydrated copper sulphate (CuSO4.5H2O) has five moles of water for each mole of the salt. GROUP 1 Group 1 elements are alkali metals. They are metals that are usually stored under oil or argon to s...